Henry F. Schuelke III is nearing the end of his investigation of six Justice Department lawyers involved in the botched 2008 prosecution of then-Sen. Ted Stevens (R-Alaska), The Washington Post reports.

Judge Emmet Sullivan, of U.S. District Court for the District of Columbia, tapped Schuelke in April to determine whether the lawyers intentionally withheld material from Stevens’ defense. According to the Post, Schuelke has scheduled interviews with the six lawyers.

The interviews are expected to wrap up in January. Scheulke has already reviewed thousands of documents related to the case, which Attorney General Eric Holder moved to dismiss after learning of prosecutors’ lapses in sharing information and witness statements with the defense.

Earlier this week, Inspector General Glenn Finesaid restoring confidence in the department in the wake of the Stevens case was among the department’s highest priorities. The Stevens debacle has prompted a series of reforms, including additional training for prosecutors.